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Sulphuret of Antimony

The black sulphuret (tersulphuret) of antimony is prepared from commercial sulphuret of antimony or by elutriation, in the same manner as directed for prepared chalk. (See No. 1292.) The commercial sulphuret is obtained from the native gray antimony ore by fusion; this separates the sulphuret from the less fusible earthy matter; it is then run into cakes. (Cooley.) Mixtures of an acidulated menstruum or syrup with a sulphuret of antimony, are apt to disengage sulphuretted hydrogen, when there is much of them, if kept in a warm room.

The rule should be to prepare as small a quantity as possible, and to keep the bottle cool. (Eymael.)